I have tried taking a screenshot of the orbs. They did not show up in the SS. Could be because the lighting was just wrong in the picture. Might be because its actually a lighting effect problem. Also, since I am having the same problem...

Platform:
Windows 7

ISP:
AT&T

Type of Internet Connection:
DSL

Internet Connection Speed:
6mb/s

Date & Time:
Day, night, every day, doesn't matter

Frequency:
Frequently, after being logged in for extended periods of time, but not always

Character Name:
Pooka Pucel

Race:
Lalafell M

World:
Everywhere

Class/Skill Rank:
Any class, any rank

Physical Level:
20 to 40 (started noticing around then, was probably happening sooner)

Area and Coordinates:
Anywhere / Location independent

Party or Solo:
Solo

NPC Name:
None

Monster Name:
None

In-Game Time:
Any / Varies

Steps: